Gd::getImage() - Code Metrics - oscarotero/imagecow - Measure and Improve Code Quality continuously with Scrutinizer

Gd::getImage() A
last analyzed 2020-01-08 10:30 UTC

↳ Parent: Gd

Complexity

Conditions	1
Paths	1

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	4
rs	10
c	0
b	0
f	0
cc	1
nc	1
nop	0

<?php

namespace Imagecow\Libs;

use Imagecow\ImageException;

/**
 * GD library.
 */
class Gd extends AbstractLib implements LibInterface
{
    public static $fallbackCropMethods = [
        'Entropy' => ['center', 'middle'],
        'Balanced' => ['center', 'middle'],
    ];

    protected $image;
    protected $type;

    /**
     * {@inheritdoc}
     */
    public static function checkCompatibility()
    {
        return extension_loaded('gd');
    }

    /**
     * {@inheritdoc}
     */
    public static function createFromFile($filename)
    {
        $data = getImageSize($filename);

        if (empty($data) || !is_array($data)) {
            throw new ImageException("The image file '{$filename}' cannot be loaded");
        }

        $function = 'imagecreatefrom'.image_type_to_extension($data[2], false);

        if (function_exists($function)) {
            return new static($function($filename), $data[2]);
        }
    }

    /**
     * {@inheritdoc}
     */
    public static function createFromString($string)
    {
        if (($image = imagecreatefromstring($string))) {
            return new static($image);
        }

        throw new ImageException('Error creating the image from string');
    }

    /**
     * Constructor of the class.
     *
     * @param resource $image The Gd resource.
     */
    public function __construct($image, $type = null)
    {
        $this->image = $image;
        $this->type = isset($type) ? $type : IMAGETYPE_PNG;

        imagealphablending($this->image, true);
        imagesavealpha($this->image, true);
    }

    /**
     * Destroy the image.
     */
    public function __destruct()
    {
        imagedestroy($this->image);
    }

    /**
     * {@inheritdoc}
     */
    public function flip()
    {
        imageflip($this->image, IMG_FLIP_VERTICAL);
    }

    /**
     * {@inheritdoc}
     */
    public function flop()
    {
        imageflip($this->image, IMG_FLIP_HORIZONTAL);
    }

    /**
     * {@inheritdoc}
     */
    public function save($filename)
    {
        $extension = image_type_to_extension($this->type, false);
        $function = 'image'.$extension;
        $quality = $extension === 'jpeg' ? $this->quality : -1;

        if (!function_exists($function) || $function($this->image, $filename, $quality) === false) {
            throw new ImageException("The image format '{$extension}' cannot be saved to '{$filename}'");
        }
    }

    /**
     * Gets the original image object.
     *
     * @return resource
     */
    public function getImage()
    {
        return $this->image;
    }

    /**
     * {@inheritdoc}
     */
    public function getString()
    {
        $extension = image_type_to_extension($this->type, false);
        $function = 'image'.$extension;

        if (!function_exists($function)) {
            throw new ImageException("The image format '{$extension}' cannot be exported");
        }

        ob_start();

        $quality = $extension === 'jpeg' ? $this->quality : -1;
        $function($this->image, null, $quality);

        return ob_get_clean();
    }

    /**
     * {@inheritdoc}
     */
    public function getMimeType()
    {
        return image_type_to_mime_type($this->type);
    }

    /**
     * {@inheritdoc}
     */
    public function getWidth()
    {
        return imagesx($this->image);
    }

    /**
     * {@inheritdoc}
     */
    public function getHeight()
    {
        return imagesy($this->image);
    }

    /**
     * {@inheritdoc}
     */
    public function format($format)
    {
        switch (strtolower($format)) {
            case 'jpg':
            case 'jpeg':
                $width = $this->getWidth();
                $height = $this->getHeight();

                if (($image = imagecreatetruecolor($width, $height)) === false) {
                    throw new ImageException('Error creating a image');
                }

                if (imagesavealpha($image, true) === false) {
                    throw new ImageException('Error saving the alpha chanel of the image');
                }

                if (isset($this->background[3])) {
                    $background = imagecolorallocatealpha($image, $this->background[0], $this->background[1], $this->background[2], $this->background[3]);
                } else {
                    $background = imagecolorallocate($image, $this->background[0], $this->background[1], $this->background[2]);
                }

                if (imagefill($image, 0, 0, $background) === false) {
                    throw new ImageException('Error filling the image');
                }

                imagecopy($image, $this->image, 0, 0, 0, 0, $width, $height);

                imagedestroy($this->image);
                $this->image = $image;
                $this->type = IMAGETYPE_JPEG;
                break;

            case 'gif':
                $this->type = IMAGETYPE_GIF;
                break;

            case 'png':
                $this->type = IMAGETYPE_PNG;
                break;

            case 'webp':
                $this->type = IMAGETYPE_WEBP;
                break;

            default:
                throw new ImageException("The image format '{$format}' is not valid");
        }
    }

    /**
     * imagescale() is not used due a weird black border:
     * https://bugs.php.net/bug.php?id=73281&thanks=6
     * 
     * {@inheritdoc}
     */
    public function resize($width, $height)
    {
        $image = $this->createImage($width, $height, array(0, 0, 0, 127));

        if (imagecopyresampled($image, $this->image, 0, 0, 0, 0, $width, $height, $this->getWidth(), $this->getHeight()) === false) {
            throw new ImageException('Error resizing the image');
        }

        imagedestroy($this->image);
        $this->image = $image;
    }

    /**
     * {@inheritdoc}
     */
    public function getCropOffsets($width, $height, $method)
    {
        if (empty(static::$fallbackCropMethods[$method])) {
            throw new ImageException("The crop method '$method' is not available for Gd");
        }

        return static::$fallbackCropMethods[$method];
    }

    /**
     * {@inheritdoc}
     */
    public function crop($width, $height, $x, $y)
    {
        $crop = [
            'width' => $width,
            'height' => $height,
            'x' => $x,
            'y' => $y,
        ];

        if (($image = imagecrop($this->image, $crop)) === false) {
            throw new ImageException('Error cropping the image');
        }

        imagedestroy($this->image);
        $this->image = $image;
    }

    /**
     * {@inheritdoc}
     */
    public function rotate($angle)
    {
        $background = imagecolorallocatealpha($this->image, 0, 0, 0, 127);

        if ($background === false || ($image = imagerotate($this->image, -$angle, $background)) === false) {
            throw new ImageException('Error rotating the image');
        }

        imagecolortransparent($image, imagecolorallocatealpha($image, 0, 0, 0, 127));

        imagedestroy($this->image);
        $this->image = $image;
    }

    /**
     * {@inheritdoc}
     */
    public function blur($loops)
    {
        $width = $this->getWidth();
        $height = $this->getHeight();
        $loops *= 10;

        $this->resize($width / 5, $height / 5);

        for ($x = 0; $x < $loops; $x++) {
            if (($x % 4) === 0) {
                imagefilter($this->image, IMG_FILTER_SMOOTH, -4);
                imagefilter($this->image, IMG_FILTER_BRIGHTNESS, 2);
            }

            imagefilter($this->image, IMG_FILTER_GAUSSIAN_BLUR);
        }

        $this->resize($width, $height);
    }

    /**
     * {@inheritdoc}
     */
    public function watermark(LibInterface $image, $x, $y)
    {
        if (!($image instanceof self)) {
            $image = self::createFromString($image->getString());
        }

        imagecopy($this->image, $image->getImage(), $x, $y, 0, 0, $image->getWidth(), $image->getHeight());
    }

    /**
     * {@inheritdoc}
     */
    public function opacity($opacity)
    {
        if ($opacity >= 100 || $opacity < 0) {
            return;
        }

        $this->format('png');

        $opacity = $opacity / 100;

        $width = $this->getWidth();
        $height = $this->getHeight();

        imagealphablending($this->image, false);

        for ($x = 0; $x < $width; ++$x) {
            for ($y = 0; $y < $height; ++$y) {
                $color = imagecolorat($this->image, $x, $y);
                $alpha = 127 - (($color >> 24) & 0xFF);

                if ($alpha <= 0) {
                    continue;
                }

                $color = ($color & 0xFFFFFF) | ((int) round(127 - $alpha * $opacity) << 24);

                imagesetpixel($this->image, $x, $y, $color);
            }
        }
    }

    /**
     * {@inheritdoc}
     */
    public function setProgressive($progressive)
    {
        imageinterlace($this->image, $progressive);
    }

    /**
     * Creates a new truecolor image
     *
     * @param integer $width
     * @param integer $height
     * @param array   $background
     *
     * @return resource
     */
     private function createImage($width, $height, array $background = [0, 0, 0])
    {
        if (($image = imagecreatetruecolor($width, $height)) === false) {
            throw new ImageException('Error creating a image');
        }

        if (imagesavealpha($image, true) === false) {
            throw new ImageException('Error saving the alpha chanel of the image');
        }

        if (isset($background[3])) {
            $background = imagecolorallocatealpha($image, $background[0], $background[1], $background[2], $background[3]);
        } else {
            $background = imagecolorallocate($image, $background[0], $background[1], $background[2]);
        }

        if (imagefill($image, 0, 0, $background) === false) {
            throw new ImageException('Error filling the image');
        }

        return $image;
    }
}


1			<?php
2
3			namespace Imagecow\Libs;
4
5			use Imagecow\ImageException;
6
7			/**
8			* GD library.
9			*/
10			class Gd extends AbstractLib implements LibInterface
11			{
12			public static $fallbackCropMethods = [
13			'Entropy' => ['center', 'middle'],
14			'Balanced' => ['center', 'middle'],
15			];
16
17			protected $image;
18			protected $type;
19
20			/**
21			* {@inheritdoc}
22			*/
23			public static function checkCompatibility()
24			{
25			return extension_loaded('gd');
26			}
27
28			/**
29			* {@inheritdoc}
30			*/
31			public static function createFromFile($filename)
32			{
33			$data = getImageSize($filename);
34
35			if (empty($data) \|\| !is_array($data)) {
36			throw new ImageException("The image file '{$filename}' cannot be loaded");
37			}
38
39			$function = 'imagecreatefrom'.image_type_to_extension($data[2], false);
40
41			if (function_exists($function)) {
42			return new static($function($filename), $data[2]);
43			}
44			}
45
46			/**
47			* {@inheritdoc}
48			*/
49			public static function createFromString($string)
50			{
51			if (($image = imagecreatefromstring($string))) {
52			return new static($image);
53			}
54
55			throw new ImageException('Error creating the image from string');
56			}
57
58			/**
59			* Constructor of the class.
60			*
61			* @param resource $image The Gd resource.
62			*/
63			public function __construct($image, $type = null)
64			{
65			$this->image = $image;
66			$this->type = isset($type) ? $type : IMAGETYPE_PNG;
67
68			imagealphablending($this->image, true);
69			imagesavealpha($this->image, true);
70			}
71
72			/**
73			* Destroy the image.
74			*/
75			public function __destruct()
76			{
77			imagedestroy($this->image);
78			}
79
80			/**
81			* {@inheritdoc}
82			*/
83			public function flip()
84			{
85			imageflip($this->image, IMG_FLIP_VERTICAL);
86			}
87
88			/**
89			* {@inheritdoc}
90			*/
91			public function flop()
92			{
93			imageflip($this->image, IMG_FLIP_HORIZONTAL);
94			}
95
96			/**
97			* {@inheritdoc}
98			*/
99			public function save($filename)
100			{
101			$extension = image_type_to_extension($this->type, false);
102			$function = 'image'.$extension;
103			$quality = $extension === 'jpeg' ? $this->quality : -1;
104
105			if (!function_exists($function) \|\| $function($this->image, $filename, $quality) === false) {
106			throw new ImageException("The image format '{$extension}' cannot be saved to '{$filename}'");
107			}
108			}
109
110			/**
111			* Gets the original image object.
112			*
113			* @return resource
114			*/
115			public function getImage()
116			{
117			return $this->image;
118			}
119
120			/**
121			* {@inheritdoc}
122			*/
123			public function getString()
124			{
125			$extension = image_type_to_extension($this->type, false);
126			$function = 'image'.$extension;
127
128			if (!function_exists($function)) {
129			throw new ImageException("The image format '{$extension}' cannot be exported");
130			}
131
132			ob_start();
133
134			$quality = $extension === 'jpeg' ? $this->quality : -1;
135			$function($this->image, null, $quality);
136
137			return ob_get_clean();
138			}
139
140			/**
141			* {@inheritdoc}
142			*/
143			public function getMimeType()
144			{
145			return image_type_to_mime_type($this->type);
146			}
147
148			/**
149			* {@inheritdoc}
150			*/
151			public function getWidth()
152			{
153			return imagesx($this->image);
154			}
155
156			/**
157			* {@inheritdoc}
158			*/
159			public function getHeight()
160			{
161			return imagesy($this->image);
162			}
163
164			/**
165			* {@inheritdoc}
166			*/
167			public function format($format)
168			{
169			switch (strtolower($format)) {
170			case 'jpg':
171			case 'jpeg':
172			$width = $this->getWidth();
173			$height = $this->getHeight();
174
175			if (($image = imagecreatetruecolor($width, $height)) === false) {
176			throw new ImageException('Error creating a image');
177			}
178
179			if (imagesavealpha($image, true) === false) {
180			throw new ImageException('Error saving the alpha chanel of the image');
181			}
182
183			if (isset($this->background[3])) {
184			$background = imagecolorallocatealpha($image, $this->background[0], $this->background[1], $this->background[2], $this->background[3]);
185			} else {
186			$background = imagecolorallocate($image, $this->background[0], $this->background[1], $this->background[2]);
187			}
188
189			if (imagefill($image, 0, 0, $background) === false) {
190			throw new ImageException('Error filling the image');
191			}
192
193			imagecopy($image, $this->image, 0, 0, 0, 0, $width, $height);
194
195			imagedestroy($this->image);
196			$this->image = $image;
197			$this->type = IMAGETYPE_JPEG;
198			break;
199
200			case 'gif':
201			$this->type = IMAGETYPE_GIF;
202			break;
203
204			case 'png':
205			$this->type = IMAGETYPE_PNG;
206			break;
207
208			case 'webp':
209			$this->type = IMAGETYPE_WEBP;
210			break;
211
212			default:
213			throw new ImageException("The image format '{$format}' is not valid");
214			}
215			}
216
217			/**
218			* imagescale() is not used due a weird black border:
219			* https://bugs.php.net/bug.php?id=73281&thanks=6
220			*
221			* {@inheritdoc}
222			*/
223			public function resize($width, $height)
224			{
225			$image = $this->createImage($width, $height, array(0, 0, 0, 127));
226
227			if (imagecopyresampled($image, $this->image, 0, 0, 0, 0, $width, $height, $this->getWidth(), $this->getHeight()) === false) {
228			throw new ImageException('Error resizing the image');
229			}
230
231			imagedestroy($this->image);
232			$this->image = $image;
233			}
234
235			/**
236			* {@inheritdoc}
237			*/
238			public function getCropOffsets($width, $height, $method)
239			{
240			if (empty(static::$fallbackCropMethods[$method])) {
241			throw new ImageException("The crop method '$method' is not available for Gd");
242			}
243
244			return static::$fallbackCropMethods[$method];
245			}
246
247			/**
248			* {@inheritdoc}
249			*/
250			public function crop($width, $height, $x, $y)
251			{
252			$crop = [
253			'width' => $width,
254			'height' => $height,
255			'x' => $x,
256			'y' => $y,
257			];
258
259			if (($image = imagecrop($this->image, $crop)) === false) {
260			throw new ImageException('Error cropping the image');
261			}
262
263			imagedestroy($this->image);
264			$this->image = $image;
265			}
266
267			/**
268			* {@inheritdoc}
269			*/
270			public function rotate($angle)
271			{
272			$background = imagecolorallocatealpha($this->image, 0, 0, 0, 127);
273
274			if ($background === false \|\| ($image = imagerotate($this->image, -$angle, $background)) === false) {
275			throw new ImageException('Error rotating the image');
276			}
277
278			imagecolortransparent($image, imagecolorallocatealpha($image, 0, 0, 0, 127));
279
280			imagedestroy($this->image);
281			$this->image = $image;
282			}
283
284			/**
285			* {@inheritdoc}
286			*/
287			public function blur($loops)
288			{
289			$width = $this->getWidth();
290			$height = $this->getHeight();
291			$loops *= 10;
292
293			$this->resize($width / 5, $height / 5);
294
295			for ($x = 0; $x < $loops; $x++) {
296			if (($x % 4) === 0) {
297			imagefilter($this->image, IMG_FILTER_SMOOTH, -4);
298			imagefilter($this->image, IMG_FILTER_BRIGHTNESS, 2);
299			}
300
301			imagefilter($this->image, IMG_FILTER_GAUSSIAN_BLUR);
302			}
303
304			$this->resize($width, $height);
305			}
306
307			/**
308			* {@inheritdoc}
309			*/
310			public function watermark(LibInterface $image, $x, $y)
311			{
312			if (!($image instanceof self)) {
313			$image = self::createFromString($image->getString());
314			}
315
316			imagecopy($this->image, $image->getImage(), $x, $y, 0, 0, $image->getWidth(), $image->getHeight());
317			}
318
319			/**
320			* {@inheritdoc}
321			*/
322			public function opacity($opacity)
323			{
324			if ($opacity >= 100 \|\| $opacity < 0) {
325			return;
326			}
327
328			$this->format('png');
329
330			$opacity = $opacity / 100;
331
332			$width = $this->getWidth();
333			$height = $this->getHeight();
334
335			imagealphablending($this->image, false);
336
337			for ($x = 0; $x < $width; ++$x) {
338			for ($y = 0; $y < $height; ++$y) {
339			$color = imagecolorat($this->image, $x, $y);
340			$alpha = 127 - (($color >> 24) & 0xFF);
341
342			if ($alpha <= 0) {
343			continue;
344			}
345
346			$color = ($color & 0xFFFFFF) \| ((int) round(127 - $alpha * $opacity) << 24);
347
348			imagesetpixel($this->image, $x, $y, $color);
349			}
350			}
351			}
352
353			/**
354			* {@inheritdoc}
355			*/
356			public function setProgressive($progressive)
357			{
358			imageinterlace($this->image, $progressive);
359			}
360
361			/**
362			* Creates a new truecolor image
363			*
364			* @param integer $width
365			* @param integer $height
366			* @param array $background
367			*
368			* @return resource
369			*/
370			private function createImage($width, $height, array $background = [0, 0, 0])
371			{
372			if (($image = imagecreatetruecolor($width, $height)) === false) {
373			throw new ImageException('Error creating a image');
374			}
375
376			if (imagesavealpha($image, true) === false) {
377			throw new ImageException('Error saving the alpha chanel of the image');
378			}
379
380			if (isset($background[3])) {
381			$background = imagecolorallocatealpha($image, $background[0], $background[1], $background[2], $background[3]);
382			} else {
383			$background = imagecolorallocate($image, $background[0], $background[1], $background[2]);
384			}
385
386			if (imagefill($image, 0, 0, $background) === false) {
387			throw new ImageException('Error filling the image');
388			}
389
390			return $image;
391			}
392			}
393

oscarotero / imagecow

Gd::getImage() A last analyzed 2020-01-08 10:30 UTC

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Gd::getImage() A
last analyzed 2020-01-08 10:30 UTC